Paint Shop Pro Discussion

Here's some discussion from the Paint Shop Pro newsgroup about scanning and print resolution


From my experience there is little advantage to scanning photo prints at more than 300 ppi as you will not get any more detail, but, will start seeing grain and paper fibres. 1200 ppi and 2400 ppi should be reserved for slides and negatives and even then at 2400 ppi you will start seeing grain. 

Rob


You may be right, but scanning at 1200dpi makes me happy. Never underestimate the importance of happiness.

Having said that, I think there is a solid case to be made for scanning at whatever resolution is necessary to allow an 8x10 print to be made at 300dpi.

-Mark


Mark, now I think you've got it! This is the point that Porter made in another post to you on this issue. Unless you expect to make prints larger than 8x10, that's a good goal to shoot for. Scanning with a printer resolution of 300 is more than sufficient to ensure you will have all available detail.

There is one consideration, however, that has been covered in other threads, and that is when scanning produces what is described as moiré patterns on the image. Apparently (and don't ask me the tech details because I don't know) if these patterns appear in your scanned image, one solution is to scan at least 600 dpi print resolution, then resize in PSP to 300. The threads I've seen this discussed in usually deal with scanning old black and white images (maybe something about them makes patterning more obvious in a scan - again, I don't know but thought I'd mention it).

In the end, however, having a final image with sufficient print resolution to produce an 8x10 print (which would be 300 ppi) is, as Porter noted, a good standard for most people to work from.

Regards, JoeB 

<snip>

Except if you foresee a similar use for a small portion of the original. It's nice to have wiggle room for heavy cropping/extraction. :)

It's also worth considering how Windows currently handles bitmaps and how screen size and resolution continue to increase. High-res scanning would allow a larger, sharper image on future monitors; today's screen-sized bitmaps would either look tiny or be subject to heavy interpolation. This won't be a major problem anytime soon, but if you have vast tracts of hard disk space, go ahead and put it to use. :)

false_dmitrii


I wondered why you had big images but with only 2.5 by 3 print size now it’s clear you are scanning Roll film Negatives In which case do it the maths way. A good print need between 200 and 300 ppi. As the human eye can not resolve less the .002 of an inch it pointless going above 200ppi unless you have V.Good eyes or it’s for a Photo Exhibition.

Going above 300ppi is pointless, period.

So decide of your possible biggest print size that you may want. Say, 11 inches wide, so 11 x 200ppi = 2200pixel wide divided by the width of the neg. 3.5 inch=628.5...call it 630. Scan at 630 ppi and you have enough to make good A4 prints with nothing wasted.

You scan software might have an easy way of doing this ie. setting print size. But if you understand the above, you can use it in many ways.

 

Jeff wrote:

In PSP 9, what does the One step Photo Fix actually do?

That is, what specific corrective steps does it do in sequence - and do any of these remove image data?

http://campratty.com/2photos/ppages/p01autotips.html

 

What’s the best way to resize upwardly?

Faramir scripts url:

http://www.fabriceroux.com/pspscripts/


INDEX        NEXT